*pos = 2 * subband_cnt;
}
+static void ieee80211_tdls_add_oper_classes(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ u8 *pos;
+ u8 op_class;
+
+ if (!ieee80211_chandef_to_operating_class(&sdata->vif.bss_conf.chandef,
+ &op_class))
+ return;
+
+ pos = skb_put(skb, 4);
+ *pos++ = WLAN_EID_SUPPORTED_REGULATORY_CLASSES;
+ *pos++ = 2; /* len */
+
+ *pos++ = op_class;
+ *pos++ = op_class; /* give current operating class as alternate too */
+}
+
static void ieee80211_tdls_add_bss_coex_ie(struct sk_buff *skb)
{
u8 *pos = (void *)skb_put(skb, 3);
memcpy(lnkid->resp_sta, rsp_addr, ETH_ALEN);
}
+static void
+ieee80211_tdls_add_aid(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
+{
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ u8 *pos = (void *)skb_put(skb, 4);
+
+ *pos++ = WLAN_EID_AID;
+ *pos++ = 2; /* len */
+ put_unaligned_le16(ifmgd->aid, pos);
+}
+
/* translate numbering in the WMM parameter IE to the mac80211 notation */
static enum ieee80211_ac_numbers ieee80211_ac_from_wmm(int ac)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_supported_band *sband;
struct ieee80211_sta_ht_cap ht_cap;
+ struct ieee80211_sta_vht_cap vht_cap;
struct sta_info *sta = NULL;
size_t offset = 0, noffset;
u8 *pos;
- rcu_read_lock();
-
- /* we should have the peer STA if we're already responding */
- if (action_code == WLAN_TDLS_SETUP_RESPONSE) {
- sta = sta_info_get(sdata, peer);
- if (WARN_ON_ONCE(!sta)) {
- rcu_read_unlock();
- return;
- }
- }
-
ieee80211_add_srates_ie(sdata, skb, false, band);
ieee80211_add_ext_srates_ie(sdata, skb, false, band);
ieee80211_tdls_add_supp_channels(sdata, skb);
offset = noffset;
}
+ rcu_read_lock();
+
+ /* we should have the peer STA if we're already responding */
+ if (action_code == WLAN_TDLS_SETUP_RESPONSE) {
+ sta = sta_info_get(sdata, peer);
+ if (WARN_ON_ONCE(!sta)) {
+ rcu_read_unlock();
+ return;
+ }
+ }
+
+ ieee80211_tdls_add_oper_classes(sdata, skb);
+
/*
* with TDLS we can switch channels, and HT-caps are not necessarily
* the same on all bands. The specification limits the setup to a
sband = local->hw.wiphy->bands[band];
memcpy(&ht_cap, &sband->ht_cap, sizeof(ht_cap));
- if (action_code == WLAN_TDLS_SETUP_REQUEST && ht_cap.ht_supported) {
+ if ((action_code == WLAN_TDLS_SETUP_REQUEST ||
+ action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) &&
+ ht_cap.ht_supported) {
ieee80211_apply_htcap_overrides(sdata, &ht_cap);
/* disable SMPS in TDLS initiator */
ieee80211_ie_build_ht_cap(pos, &ht_cap, ht_cap.cap);
}
- rcu_read_unlock();
-
if (ht_cap.ht_supported &&
(ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40))
ieee80211_tdls_add_bss_coex_ie(skb);
+ ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
+
+ /* add any custom IEs that go before VHT capabilities */
+ if (extra_ies_len) {
+ static const u8 before_vht_cap[] = {
+ WLAN_EID_SUPP_RATES,
+ WLAN_EID_COUNTRY,
+ WLAN_EID_EXT_SUPP_RATES,
+ WLAN_EID_SUPPORTED_CHANNELS,
+ WLAN_EID_RSN,
+ WLAN_EID_EXT_CAPABILITY,
+ WLAN_EID_QOS_CAPA,
+ WLAN_EID_FAST_BSS_TRANSITION,
+ WLAN_EID_TIMEOUT_INTERVAL,
+ WLAN_EID_SUPPORTED_REGULATORY_CLASSES,
+ WLAN_EID_MULTI_BAND,
+ };
+ noffset = ieee80211_ie_split(extra_ies, extra_ies_len,
+ before_vht_cap,
+ ARRAY_SIZE(before_vht_cap),
+ offset);
+ pos = skb_put(skb, noffset - offset);
+ memcpy(pos, extra_ies + offset, noffset - offset);
+ offset = noffset;
+ }
+
+ /* build the VHT-cap similarly to the HT-cap */
+ memcpy(&vht_cap, &sband->vht_cap, sizeof(vht_cap));
+ if ((action_code == WLAN_TDLS_SETUP_REQUEST ||
+ action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) &&
+ vht_cap.vht_supported) {
+ ieee80211_apply_vhtcap_overrides(sdata, &vht_cap);
+
+ /* the AID is present only when VHT is implemented */
+ if (action_code == WLAN_TDLS_SETUP_REQUEST)
+ ieee80211_tdls_add_aid(sdata, skb);
+
+ pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
+ ieee80211_ie_build_vht_cap(pos, &vht_cap, vht_cap.cap);
+ } else if (action_code == WLAN_TDLS_SETUP_RESPONSE &&
+ vht_cap.vht_supported && sta->sta.vht_cap.vht_supported) {
+ /* the peer caps are already intersected with our own */
+ memcpy(&vht_cap, &sta->sta.vht_cap, sizeof(vht_cap));
+
+ /* the AID is present only when VHT is implemented */
+ ieee80211_tdls_add_aid(sdata, skb);
+
+ pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
+ ieee80211_ie_build_vht_cap(pos, &vht_cap, vht_cap.cap);
+ }
+
+ rcu_read_unlock();
+
/* add any remaining IEs */
if (extra_ies_len) {
noffset = extra_ies_len;
memcpy(pos, extra_ies + offset, noffset - offset);
}
- ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
}
static void
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
size_t offset = 0, noffset;
struct sta_info *sta, *ap_sta;
+ enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
u8 *pos;
rcu_read_lock();
}
}
+ ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
+
+ /* only include VHT-operation if not on the 2.4GHz band */
+ if (band != IEEE80211_BAND_2GHZ && !ap_sta->sta.vht_cap.vht_supported &&
+ sta->sta.vht_cap.vht_supported) {
+ struct ieee80211_chanctx_conf *chanctx_conf =
+ rcu_dereference(sdata->vif.chanctx_conf);
+ if (!WARN_ON(!chanctx_conf)) {
+ pos = skb_put(skb, 2 +
+ sizeof(struct ieee80211_vht_operation));
+ ieee80211_ie_build_vht_oper(pos, &sta->sta.vht_cap,
+ &chanctx_conf->def);
+ }
+ }
+
rcu_read_unlock();
/* add any remaining IEs */
pos = skb_put(skb, noffset - offset);
memcpy(pos, extra_ies + offset, noffset - offset);
}
-
- ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator);
}
static void
26 + /* max(WMM-info, WMM-param) */
2 + max(sizeof(struct ieee80211_ht_cap),
sizeof(struct ieee80211_ht_operation)) +
+ 2 + max(sizeof(struct ieee80211_vht_cap),
+ sizeof(struct ieee80211_vht_operation)) +
50 + /* supported channels */
3 + /* 40/20 BSS coex */
+ 4 + /* AID */
+ 4 + /* oper classes */
extra_ies_len +
sizeof(struct ieee80211_tdls_lnkie));
if (!skb)
if (!is_zero_ether_addr(sdata->u.mgd.tdls_peer) &&
!ether_addr_equal(sdata->u.mgd.tdls_peer, peer)) {
ret = -EBUSY;
- goto exit;
+ goto out_unlock;
}
/*
if (!sta_info_get(sdata, peer)) {
rcu_read_unlock();
ret = -ENOLINK;
- goto exit;
+ goto out_unlock;
}
rcu_read_unlock();
}
ieee80211_flush_queues(local, sdata, false);
+ memcpy(sdata->u.mgd.tdls_peer, peer, ETH_ALEN);
+ mutex_unlock(&local->mtx);
+ /* we cannot take the mutex while preparing the setup packet */
ret = ieee80211_tdls_prep_mgmt_packet(wiphy, dev, peer, action_code,
dialog_token, status_code,
peer_capability, initiator,
extra_ies, extra_ies_len, 0,
NULL);
- if (ret < 0)
- goto exit;
+ if (ret < 0) {
+ mutex_lock(&local->mtx);
+ eth_zero_addr(sdata->u.mgd.tdls_peer);
+ mutex_unlock(&local->mtx);
+ return ret;
+ }
- memcpy(sdata->u.mgd.tdls_peer, peer, ETH_ALEN);
ieee80211_queue_delayed_work(&sdata->local->hw,
&sdata->u.mgd.tdls_peer_del_work,
TDLS_PEER_SETUP_TIMEOUT);
+ return 0;
-exit:
+out_unlock:
mutex_unlock(&local->mtx);
return ret;
}
projects / firefly-linux-kernel-4.4.55.git / blobdiff